Solution A The preparation of this solution should be done under the bood l. wcigh g of phenol in a bcakar and add approximately 500 of distilled water 2. Mix the solution with magneticstimar and magnet until complete dissolution of the In another beaker, weight 0.05 g of sodium nitro-pnusiate 2-hydrate and add 200 ml af distilled water 4, Ma the solution with magnetic stimer and magnet until complete dissolution of the sodium 2-bydrate 5. Mix the 2 solutions in a volumetric nask of IL and adjust volume with distilled water. 6 Transfer the solution to die dark glass bottle and keep it in the fridge. Do not use this solution 30 d after its preparation